<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Hello React</title>
</head>

<body>
    <!-- 显示在id属性值为“root”的div标签内 -->
    <div id="root">
        <h1>Hello React</h1>
    </div>

</body>

</html>